---
title: "PopupPositionProvider"
description: "Calculates the position of a [Popup] on screen."
type: "interface"
---

<div class='type'>Interface</div>


<a id='references'></a>

<div class='sourceset sourceset-common'>Common</div>



```kotlin
interface PopupPositionProvider
```


Calculates the position of a `Popup` on screen.


## Functions

```kotlin
fun calculatePosition(
        anchorBounds: IntRect,
        windowSize: IntSize,
        layoutDirection: LayoutDirection,
        popupContentSize: IntSize,
    ): IntOffset
```


Calculates the position of a `Popup` on screen.

The window size is useful in cases where the popup is meant to be positioned next to its
anchor instead of inside of it. The size can be used to calculate available space around the
parent to find a spot with enough clearance (e.g. when implementing a dropdown). Note that
positioning the popup outside of the window bounds might prevent it from being visible.

#### Parameters

| | |
| --- | --- |
| anchorBounds | The window relative bounds of the layout which this popup is anchored to. |
| windowSize | The size of the window containing the anchor layout. |
| layoutDirection | The layout direction of the anchor layout. |
| popupContentSize | The size of the popup's content. |


#### Returns

| | |
| --- | --- |
|  | The window relative position where the popup should be positioned. |